304212222 has 12 divisors (see below), whose sum is σ = 659126520. Its totient is φ = 101404068.

The previous prime is 304212217. The next prime is 304212253. The reversal of 304212222 is 222212403.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 16900679 = 304212222 / (3 + 0 + 4 + 2 + 1 + 2 + 2 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 304212195 and 304212204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8450322 + ... + 8450357.

It is an arithmetic number, because the mean of its divisors is an integer number (54927210).

Almost surely, 2^304212222 is an apocalyptic number.

304212222 is an abundant number, since it is smaller than the sum of its proper divisors (354914298).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

304212222 is a wasteful number, since it uses less digits than its factorization.

304212222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16900687 (or 16900684 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 304212222 is about 17441.6805956307. The cubic root of 304212222 is about 672.5515110049.

Adding to 304212222 its reverse (222212403), we get a palindrome (526424625).

The spelling of 304212222 in words is "three hundred four million, two hundred twelve thousand, two hundred twenty-two".